公路路基土方工程施工方案.doc

stressed that promoting the comprehensive revitalization should focus on economic construction as the central focus with, pay special attention to grasp the implementation of five development concepts, deepening reform and promoting the all-round opening up, ensuring and improving peoples livelihood, strengthen the construction of ecological civilization, five priorities, play development mix. To with new development concept measure work, and command action, and training cadres, in implement implementation new development concept in the looking for opportunities, and build highlights, and expand advantage; to full deepening reform, break bound the aspects created vitality of system mechanism obstacles; to active advance full aspects opening, participation in the cast Russian Economic Corridor construction; to guarantees and improved livelihood, strongly won poverty battle; to strengthening ecological civilization construction, for sustainable development reserved space, for future generations left sky blue, and to green, and water clear of better homes. We must in-depth implement implementation new development concept, insisted to economic construction for Center, firmly caught development this first priority, absorbed make construction, heart no distractions caught development, speed up development six big industry, in-depth implementation three big engineering, active create two big environment, out of a article quality more high, and benefits better, and structure more excellent of transformation development of road. To strengthen ecological construction. On March 22, the deep restructuring examined and adopted the opinion on perfecting compensation mechanism of ecological protection, proposed to explore the establishment of diversified ecological compensation mechanism, progressive realization of forests, grasslands, wetlands and other areas of focus and key ecological function and other important regional ecological compensation coverage, the ecological advantages of the region will be further highlighted. We need to go green eco-building, as the essential policy, in strict accordance with the State of main function region construction requirements, careful implementation and Xiaoxing an mountains forest ecological protection and economic restructuring plan for the construction of sky blue, . Acts prohibited by picking up the remaining wells in standing timber. To focus on forest resource conservation, increase the acquisition and supervision of cold storage, no buy fruit, encourage support to leading enterprises, workers cooperatives as a unit, the contract management of forest resources, the rational protection and utilization of resources. To work actively towards policy aimed from the level of the State Forestry Administration formulated regulations to protect forest resources as soon as possible to achieve law and regulation to protect forest resources. Should focus on forest fire prevention. Fire safety is the first priority土方路基施工方案一、 工程概况：本工程是农十二师西山乌鲁木齐国家级开发区公路乌鲁木齐市国家级开发区十二师合作分区重要的出路口，服务于“西山工业园区”和“经济技术开发区与十二师合作区”，将为两个开发区物资人员流动创造快捷的通行条件，对促进区域优势资源开发和经济协调发展具有十分重要的意义。二、施工方法：1、施工流程：路堤填筑施工按三阶段、四区段、八流程水平分层填筑。三阶段：准备阶段施工阶段检查签证阶段；四区段：填筑区摊铺平整区碾压区检验区；八流程：施工准备基底处理分层填筑摊铺整平碾压夯实检验签证路面基成型边坡整修。2、工程进度计划：3、主要施工工序及施工方法：路堤工程开工前组织技术人员认真完成技术准备工作，主要包括全面熟悉施工设计图纸并进行核对；全面进行地质核查；交接桩及施工复测；测量、补桩、划线、复测导线点和水准控制点，并在施工范围内全面恢复中线。填料调查及试验；建设工地试验室；编制实施性施工组织设计及开工报告；进行技术培训等。路基放样结束将填筑范围内表层的杂草、树根等杂物全部按设计要求清理干净，并挖好临时排水沟。并在填筑前按照设计和规范要求进行基底清理、平整和碾压作业，使基底土层的强度和密度大致设计标准。基底按规定做出地面横坡，对不符合规定的原地面横坡要进行处理，使地面平顺无坑，以利于排水。(3)试验段填筑为指导路基填筑施工，掌握路基填筑施工的参数，保证路基工程达到优良，在正式施工前对不同填料、不同改良措施的路基进行工艺试验，确定填筑及改良工艺、技术参数及质量控制措施。选取典型的路基填筑地段进行路基试验段填筑施工，试验段长度应按不少于200m考虑，通过试验段确定本标段各种路基填料的填筑厚度、最佳含水量、碾压遍数及各类机具的合理配置等方案，结合设计、规范要求，以此指导本标段的路基填筑施工。(4)基床以下路堤填筑工艺及方法逐段实施路基放样，用白灰标定边界范围。路堤填筑前，先根据填土高度和试验确定的分层厚度、压实机械及技术参数等，计算出分层数、松铺厚度及碾压遍数，现场绘出分层施工图，以便控制填土厚度，科学安排施工进度，合理调配施工机械。按照试验段取得的施工参数、施工机械组合及碾压工艺等按 “三阶段、四区段、八流程”的方法进行路基填筑施工。施工按填筑分层和作业区分段的方式，进行横断面全宽、纵向分层填筑。推土机配合装载机或挖掘机装料，自卸汽车运输，采用推土机配合平地机摊铺平整，振动压路机压实。1 )一般填料路基填筑方法一般路基填筑施工工艺流程见图1-1路基填筑施工工艺流程准备阶段施工阶段整修验收阶段填土区段平整区段碾压区段整修区段路基整修施工准备基底处理检验签证分层填筑机械碾压洒水或晾晒摊铺整平图1-1 一般路基填筑施工工艺流程图工艺方法如下：分层填筑路基填筑时应采取横断面全宽、纵向分层填筑的方式。填筑虚铺厚度按照试验确定的参数进行控制，一般不超过30cm。自卸车卸土，应根据车容量计算堆土间距，以便平整时控制层厚，当原地面高低不平时，从最低处分层填筑，由两边向中心填筑。为保证路堤全断面的压实度一致和完工后的路堤边缘有足够的压实度，边坡两侧各超填0.5m，竣工时修坡整平。填筑施工根据现场施工条件，采用推土机配合挖掘机或装载机装车，自卸汽车运输。施工时，根据填筑高度及由试验段确定的分层厚度、压实系数，由技术人员制定出计划分层数、压路机走行速度、碾压遍数，并绘出分层施工图，向施工队长、领工员、指挥卸土人员、压路机司机进行书面交底。施工队长、领工员负责控制松铺厚度，并配合机械随时进行厚度调整。为节省摊铺平整时间，在运送填料时，严格控制倒土密度，根据车载量及松铺厚度计算卸车密度。用不同填料填筑路堤时，各种填料禁止混杂填筑，每一水平层的全宽用同一种填料填筑，并做成横向2%的排水坡。摊铺平整填筑区段完成一层卸土后，用推土机、平地机摊铺平整，做到填铺面在纵向和横向平顺均匀，以保证压路机压轮表面能均匀地接触填铺面进行碾压，达到碾压效果。摊铺时边坡两侧各加宽0.5m，在摊铺的同时利用推土机对路肩进行初步压实，并保证压路机压到路肩时不致发生滑坡。洒水或晾晒严格控制填料的含水量。含水量不超过试验中求得的最佳含水量的2%或不低于最佳含水量的3%。当含水量太低时，在表面洒水并尽可能地搅拌，待提高含水量后再摊铺碾压；当填料含水量超过规定时，则在摊铺后先晾晒，待降低含水量至最佳含水量时再碾压，填层厚度可适当减薄。在洒水或晾晒时，前后两区段交叉施工。机械碾压填土压实作业用光轮压路机配合重型振动压路机碾压。压实前，由领工员、压路机司机进行检查，确认层厚及平整度符合要求后，再进行碾压。用振动压路机进行碾压时，第一遍静压，然后先慢后快，由弱振至强振，最快行驶速度控制在4km/h，由两边向中央纵向进退式进行。横向接头重叠0.40.5m，前后相邻两区段间纵向重叠1.52.0m。做到压实均匀，没有漏压、死角。按照压实部位密度标准、填层厚度及控制压实遍数进行压实。压实遍数由试验人员根据试验段确定的压实系数提供。经密度检测合格，且监理平行检测合格后，方可转入下一道工序。不合格时进行补压，直至合格。检验签证按验标要求对填料质量、填筑厚度、填层面纵、横方向平整度、路面坡、压实质量、边坡质量等进行检查验收，达不到标准的按要求进行整修合格后予签认。路面、边坡整形路堤按设计标高填筑完成后，每20m设一个断面三个桩(两个边桩，一个中桩)。进行高程测量，计算平整高度，施放路肩边线桩，修筑路拱，并用光轮压路机碾压一遍，使路面光洁无浮土，横向排水坡符合要求。依据路肩边线桩，用人工按设计坡率挂线刷去超填部分。边坡刷去超填部分后进行整修夯实，整修后的边坡达到坡面平顺没有凹凸，转折处棱线明显，直线处平直，变化处平顺，压实度合格。8、沉降观测：为保证路提在填筑施工中的安全和稳定，在路基填筑时要严格控制施工速率。路基垂直沉降每昼夜不大于1.5cm，且每填筑一层必须测定一次。如果两次填筑间隔时间较长时，每3天观测一次。如超过此限应立即停止填筑，观察其沉降量基本稳定并符合上述规定数值后，方可继续填筑。9、路基整修：路基填筑完毕在交工前按设计尺寸整修路基面的排水横坡、平整度、边坡等。边坡应挂线进行修坡，将超填部分用人工刷除，并保证路堤坡面平整，无凹凸起伏现象。路基整修应达到下表所示的检验标准要求。10质量保证措施：(1)建立完整的质量保证体系，实行全面质量管理（质量保证体系见施工组织设计）(2)测量控制：技术人员要准确控制中、平，防止欠填或超填，并将路基面标高控制在规范要求的范围内，每层碾压完毕都要进行复测。(3)桥台后填筑控制：首先填土预压，之后再反开挖施工。桥台后的填料要符合设计要求，填筑时结构物必须达到设计强度后待空心板安装完成，才准填筑，并应分层对称进行。当结构物附近用大型机械压实有困难时，应用小型夯实机夯实。 (4)路基填筑质量的检测：路基填筑按试验确定的参数碾压完毕后，试验人员应及时按规定进行质量检测试验，主要采用核子密度仪或灌沙法进行密度试验，并准确详细记录试验结果。如密实度达不到设计要求，不得进行下道工序施工，应重新碾压合格。 (5) 雨季填筑路堤时，做到随挖随运，随铺随压，每层表面应有2%以上横向排水坡，中途长期停工时，对表层及边坡加以整理，使之不积水，复工时，应复压后继续填筑。通过多种方式和手段，进行文献检索、资料收集和整理，旨在了解我国住房制度和当代居住小区规划设计、建设、发展的理论与实践问题the first responsibility of the forest, 26th spring area has fully deployed to the fire, has now entered the fire, we have to be on duty, and defend. Determined to overcome paralysis, must not Twelve-Five no fires in the past, the reduced requirements during the period. To apply strictly the party with the responsibility, must shoulder the responsibility of the Party Secretary in particular, really practice pipes, it can never shuaishouzhanggui, be sure to layer the implementation falls fire responsibility, to ensure that no major forest fires. To adhere to balanced, correctly handle the relationship between fire and project construction, industrial development, to never miss or two. Second, to speed up the development of six major industries. Promote development in our region, the key is to give full play to resource advantage to build eco-oriented big six system, to create the new engine of economic growth. Firm confidence. Practice has proved that the big six of both central and provincial requirements, and meet the actual da hinggan mountains, through active efforts have been showing a strong momentum of development. So, in the six on development, we must be firm in faith, go all out, perseverance, one caught in the end, convinced that Castle is not relaxed, does not reach the target will never give up. Should focus on industrial projects. Project is to accelerate the industrial development of important support and backing. Industrial project construction, my area there are few in number, small size, low level problems. This year, the project as his party has first project, we have to work hard to project construction. Especially effective during short, catching project shall not, slow, dragging not allowed. All localities should conscientiously implement the project leadership system, timetable, roadmap, and coordinate services, tracking the whole process forward, inverted durations, speeding up progress and seek practical results. Poised to break the project build Set challenges, to accelerate the pace of preliminary formalities, the enterprises have difficulties to pull one way and also help in a timely manner to help businesses market, enhance confidence, urging work as soon as possible. To strengthen the project analysis, proper risk analysis and improve project success rates. (Specific to the XX, we still want to make good use of agricultural advantages, relying on the upper reaches of the forest in the fresh air and XXX pure water and other resources, create high-quality, high-grade green food brands, truly reflect the original character. Meanwhile, adhere to the project as the breakthrough to promote economic development around the six industrial chain to pay special attention to forming projects, dig potential projects, focus on key projects, actively cultivating the new leading industries and new sources of economic growth). To promote investment. More accurate professional business, and based my industrial base and resources, aimed at national industrial layout